Egbert b



(No Model.)

B. B. GOODYEAR.

STOP MOTION FOR KNITTING MACHINES.

lP a t e I;ed Aug. 28, 1888 F i l irnn Srnrns nrnnr Orricn.

ROBERT B. GOODYEAR, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OFTlVOTHIR-DS TO A. TAYLOR SON AND ABRAHAM LINCOLN GOODYEAR,

ALL OF SAME PLACE.

STOP MOTlON FOR KNITTING=WIACHINES.

$PECIPICATION forming part of Letters Patent No. 388,77 dated August 28,1888.

Application filed February 2, 1898. Serial No. 262.787. (No model.)

To (ZZZ whom ii may concern:

Be it known that I, Bonner B. GOODYEAR, of the city and county ofPhiladelphia, and State of Pennsylvania, have invented an Im- 5provcmcnt in Stop-Motions for Knitting-Machines, of which the followingis a specificaticn.

My invention relates to stop-niotions for khitting-machines; and itconsists of certain improvements,which are fully set forth in thefollowing specification, and shown in the accompan ying d rawi n gs,which f rm part therco f.

It is the object of my invention to devise improved mechanism which willautomatically stop the operation of the knitting-machine if at any timethe thread should become broken or present a k not. If the machine isnot stopped when this occurs, it is evident that the fabric knitted willbe imperfect, and it is necessary that the machine be stopped to preventthis. To obviate the necessity of constantly watching the yarn or threadand to automatically put the machine out of operation in the case ofbreakage or knotting of the thread my invention is intended, and thisresult is accomplished by the mechanism shown in the drawings, in whichFigure lis a plan view of a knitting-machine embodying the principles ofmy invention. Fig. 2 is a perspective view of the stopmotion. Fig. 3 isa front elevation of that part of the mechanism by which the stop-motionis operated by the thread, and Fig. 4 is a side eleva' tion of theshifting mechanism.

A is aknitting-head in an ordinary frame, A.

13 represents the knittingnecdles.

0 represents the old or ordinary threadgnides, through. small holes 0 inwhich the thread D passes to the needles.

E is a portion of the frame of the machine, upon which the stop-motionthread-guides and other mechanism operated by the thread are located.

I represents the stop-motion thread-guides, 45 constructed, preferably,of wire bent in the shape shown in Fig. 2, and having the uprightportions secured to the frame E. In practice I prefer to use three ofthese guides I and to erect them parallel to each other.

F is a stand or frame, which may be constructed of sheet metal or anyother suitable material. It is secured to the frame E, preferably midwaybetween the upright parts of the guides I.

J represents floating bars or arms pivoted at j to the frame F,preferably constructed of wire and extending over the central guide, I.

G is a looselypivoted lever, pivoted to the frame F (which may havesuitable extensions for this purpose) and having two parallel arms, G,extending out, preferably, in front and under the guides I. This lever Galso has a short extension or arm, 9, extending out behind.

K represents two levers of angular or bellcrank shape, pivoted at k tothe frame E and having one of their arms K forked to allow the thread topass between the prongs.

L represents pins or stops upon the frame E to keep the levers Knormally in position. The thread from the shuttle or bobbin is broughtthrough the forked levers K and upward over the tops of the guides I,where it acts as a support upon which the floating arms or lever J rest;thenccit passes slightlydownward through the guides G to the needles B.7 5

\Vhile it is preferred to employ two each of the lovers J and K and armsG, it is evident that only one of each may be used, or, in fact, anydesired number, without departing from the principles of my invention,which are in 3 dependent of the number of these levers and arms.

H is awire or string connection between the short arm of theloosely-pivoted lever G and the trip M, to one arm of which it issecured. 8 This trip M, I prefer to construct in the form of an angularlever pivoted at m to a trip supporting arm, 0, which is journaled at Pto the main frame A.

S is a clutch or belt-shifter, upon which the 0 tripsupporting arm 0rests. This shifter is supported in an upright, U, of the main frame A,and is recessed in that portion immediately below the tripsupporting arm0. In this recess is a spring lock or catch, T, which 5 normally pressesagainst the side of the upright U.

V is a spring about the shifter S, which tends to throw the shifterforward. The lock or catch T, however, prevents this by holding theshifter in place.

8 represents pins upon the shifter S, between which the end of theY=shaped lever WV is held. This Y-shaped lever is adapted to operate aclutch, X, loosely supported by a key or feather upon the power-shaft Q.

R is a wheel or hub having teeth or pro jections 'r on its periphery,and is carried on the shaft Q close to the trip M.

Z is the pulley, loosely journaled upon the power-shaft and having arecessed part, Y, adapted to engage with the clutch X.

Z is a gear-wheel, by which the head A is rotated in the usual manner.

In operation the thread passes from the bobbins to the needles over theguides I, as heretofore described, and the machine is put in motion. If,however, there should be a knot, as shown at d, in the thread, it isevident that as the'thread passes through the forked lever K the knotwould be caught and would draw up the lever K, thus throwing down theother arm, K, of the said lever upon the arm G of the lever G. This willin turn depress the arm G and thus raise the short arm which, pullingupward with it the trip M, will throw one arm of this trip within reachof the teeth 1' of the wheel or hub B. When one of the teeth of thiswheel Roomes in contact with the trip M, it will force the trip down,and with it its supporting-arm 0, upon the spring lock or catch T, whichwill be pressed down and will unlock the shifter S. This will then beshot forward through the force of the spring V. The end of the lever Wwill be carried forward by the pins 8 and the clutch X will bedisengaged :from the pulley Z, and the machine will immediately bebrought to rest. The broken or knotted part of the thread'will berepaired and the machine started again into operation. If the thread isbroken without presenting a knot, the operation will be as follows: Whenthe broken end of the thread is drawn over the guides I, it will bedrawn from under the floating arm J, and consequently this arm J, havingno support, will fall upon the arm G of the lever G, depressing it andoperating the mechanism, as in the former case.

In place of the clutch X and lever W an ordinary belt-shifter, S, may beused, as shown in the dotted lines in Fig. 1. In this case Z will be afixed pulley, and an additional loose pulley, Z, will be required.

The mere details of construction here shown are those preferred by me 5but they are not to be considered limitations of my invention, since itis evident that they may be varied in many ways without departing fromthe principles of it.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. The combination of the rotary needlehead with two or more guides overwhich the thread is guided, one or more loose bars resting upon andsupported by the thread guided by said guides, a loosely'supported leverarranged below said loose bars, a trip actuated by said lever when thebar drops upon it, a rotating part in connection with theknittingmachine having a projection or toot-h adapted to strike saidtrip, and mechanism, substantially as described, actuated by the trip tostop the rotation of the needlehead.

2. The combination of the rotary needlehead with two or more guides overwhich the thread is guided, one or more loose bars resting upon andsupported by the thread guided by said guides, a loosely-supported leverarranged below said loose bars, a trip actuated by said lever when thebar drops upon it, a rotating part in connection with theknittingmachine having a projection or tooth adapted to strike saidtrip, and mechanism consisting of a movable bar, a spring to move said;bar, a catch to hold said bar against the spring, and a support for thetrip adapted to actuate the catch and actuated by the trip, and means,substantially as set out, actuated by the movable bar to stop therotation of the needlehead.

3. The combination of the rotary needlehead, a thread-guide, aloosely-supported lever, a pivoted forked lever between the fork ofwhich the thread passes, adapted to operate the loosely-supported leverwhen a knot in the thread passes into the fork, power devices to rotatethe needle-head, power-arresting de vices controlled by theloosely-supported lever when moved by the forked lever, consisting of atrip connected to the loosely-supported lever, a rotating part in.connection with the machine, having aprojection or tooth 1 adapted tostrike the said trip,and mechanism, substantially as described, actuatedby the trip to stop the machine on the knot in the thread passing to theneedles.

4. The combination of the rotary needlehead, a thread-guide, aloosely-supported lever, a pivoted forked lever between the fork ofwhich the thread passes, adapted to operate the loosely-supported leverwhen a knot in the thread passes into the fork, power devlces to rotatethe needle-head, power-arresting devices controlled by theloosely-supported lever when moved by the forked lever,consisting ofatrip connected to the loosely-supported lever, a rotating part inconnection with the machine, having a projection or tooth adapted tostrike the said trip, and mechanism, substantially as described,actuated by the trip, consisting of a movable bar, a spring to move saidbar, a catch to hold said bar against the action of the spring, and asupport for the trip adapted to actuate the catch, and means,substantially as set out, actuated by the bar to stop the machine on theknot in the thread passing to the needles.

5. The combination of a rotary knittinghead, power stop-motion mechanismto rotate it, two or more threadgnides, 1, arranged parallel, the standor frame F, located between the upright portions of said thread-guidesI, floating bars or arms J, pivoted to said frame F, the loosely-pivotedlever G, arranged be low said bars or arms, and also pivoted to saidframe F, a trip device controlled by said loosely-pivotedlever G, andstop-motion mech anism, substantially as set out, controlled by saidtrip device to stop the rotation of the needle-head if the thread shouldbreak and allow the bar J to fall.

6. The combination of a rotary knitting head, power stop-motionmechanism to rotate it, two or more thrcadguides, 1, arranged parallel,the stand or frame F, located between the upright portions of saidthreadguides l, floating bars or arms J, pivoted to said frame F, theloosely-pivoted lever G, having the parallel arms G, arranged below saidbars or arms, and also pivoted to said frame F, a trip device controlledby said loosely-pivoted lever G, and stop-motion mechanism,substantially as set out, controlled by said trip device to stop therotation of the needle-head if the thread should break and allow the barJ to fall upon the arms G.

7. The combination of a rotary knittinghead, power stop-motion mechanismto rotate it, a thread guide, I, the stand or frame F, located betweenthe upright portions of said thread guide I, the forked levers K, theloosely-pivoted lever G, pivoted to the said frame F, a trip devicecontrolled by said loosely-pivoted lever G and having the parallel armsG, stop-motion mechanism,substantially as set out, controlled by saidtrip device to stop the rotation of the needle-head if the thread shouldbe knotted and the levers K should strike the arms G, and stop L,located on the frame of the machine to hold the levers K normally inplace.

8. The combination of a rotary knittinghead, power mechanism to rotateit, two or more thread-guides, 1, arranged parallel, a frame or stand,F, located between the upright portions of said thread'gnides l, forkedlevers K, loosely-pivoted lever G, pivoted to the frame F, havingparallel arms G, and short arm 9, trip M, supporting-arm 0, upon whi hthe trip M is pivoted, link or wire H, connecting said trip M with theshort arm g, shaft C2,, carrying toothed wheel R, adapted to operate thetrip M, lock T, spring V, shifting' lever XV, clutch X, and policy Z.

9. The combination of a rotary knittinghcad, power mechanism to rotateit, two or more thread-guides, I, arranged parallel, a frame or stand,F", located between the upright portions of said threadguides I,floating bars or arms J, pivoted to said frame F, looselypivoted leverG, pivoted to the frame F, having the parallel arms G, and short arms 9,trip M, trip-supporting arm 0, upon which the trip M is pivoted, link orwire H, connecting said trip M and short arm 9, shaft Q, carryingtoothed wheel R, adapted to operate the trip M, lock T, spring V,shiftinglever W, clutch X, and pulley Z.

In testimony of which invention l hereunto set my hand.

ROBERT B. GOODYEAR.

W'itncsses:

R. M. HUNTER, Rienn. S. CHILD, Jr.

